TWM579723U - Miniature electronic component surface inspection mechanism - Google Patents

Abstract

A small electronic component surface inspection mechanism includes a base, a conveyor belt device disposed on the base, an image capturing device, an electrostatic generating device, an adsorption device, and a defective product removing device, wherein the conveyor belt is combined with the static electricity generating device to rub The generated small electronic components introduced by the electrostatic energy are adsorbed and positioned on the conveyor belt, and are quickly carried by the conveyor belt to the image capturing device for image determination, and the adsorption device is used to adsorb the conveyor belt, so that the conveyor belt can be smoothly carried. A small electronic component that is moved by a small electronic component and can be transported to a discharge by a conveyor belt, and a small electronic component that is determined to be defective can be pushed away from the conveyor belt by the defective product removal device before the discharge zone. High-performance small electronic component surface inspection mechanism.

Description

Small electronic component surface inspection mechanism

The present invention relates to a small electronic component surface inspection mechanism suitable for surface inspection operations such as small-sized passive electronic components.

In order to ensure the quality of products such as small electronic components such as capacitors and resistors, the aforementioned small electronic components are subjected to functional inspection in addition to the assembly process, and after completion of the assembly, it is usually necessary to perform small electronic components through a surface inspection mechanism. The surface shape of the inspection job.

The small-sized electronic components are small in size and light in weight. At present, the surface shape inspection of small electronic components is performed by placing a plurality of small electronic components on a carrier tray and transporting them to the surface inspection mechanism of the electronic component through the carrier tray for inspection. operation. Since the small electronic component is directly imaged in the carrier tray, it is easy to carry the disk barrier and it is difficult to perform comprehensive image capturing. Therefore, the electronic component to be inspected is taken from the carrier disk by the taking device and moved to the photographic lens to capture it. The surface image is judged by the control system as a good product and then returned to the carrier. If it is judged to be defective, the control system records that the defective product is located in the carrier, and each electronic component in the carrier is completed. After the surface inspection, it is transferred to the temporary area of the surface inspection mechanism, and then the removal of the defective product is performed and then sent out.

However, the use of the existing small electronic component surface inspection mechanism requires a small electronic component to be carried by the carrier tray, and the small electronic component is taken along with the taking device to take the image from the carrier, and then returned to the carrier. And the subsequent removal of defective products, etc., causing poor efficiency in performing surface inspection operations on small electronic components.

The purpose of the present invention is to provide a small electronic component surface inspection mechanism, which solves the problem that the existing small electronic components are required to carry out an electronic component surface inspection operation by the carrier disk.

In order to achieve the foregoing objects, the present invention proposes a small electronic component surface inspection mechanism comprising:  a pedestal defining a feed zone, an inspection zone, a defective removal zone and a discharge zone arranged in sequence along the lateral direction;  a conveyor belt device mounted on the base and capable of carrying a plurality of electronic components moving from the feeding zone toward the discharge zone, the conveyor belt device comprising a loop-shaped conveyor belt and capable of driving the conveyor a drive unit of the belt, the conveyor belt passes through a feeding zone, an inspection zone, a defective product removal zone and a discharge zone of the base, the conveyor belt has a component conveying section located above and a return zone located below a segment, the component conveying section and the return section are both lateral and straight sections;  An image capturing device is disposed in the inspection area of the base, the image capturing device includes a photographic lens and at least one illuminating component, wherein the photographic lens and the illuminating component are located in a component conveying section of the conveyor belt Above the photographic lens facing downwards of the conveyor belt;  An electrostatic generating device is disposed on the base and located in an inner space of the loop-shaped conveyor belt, the static electricity generating device includes an loading plate, a downloading plate and a plurality of pressing rollers, wherein the loading plate is located at the conveying a bottom surface of the component conveying section of the belt, the downloading plate is located at a top surface of the returning section of the conveyor belt, and the loading plate and the downloading plate are in frictional contact with the conveyor belt to generate static electricity for adsorbing electronic components, and the pressing force is Rollers are disposed on the base and are respectively located at two sides of the photographic lens, and the pressing roller is pressed against the top surface of the component conveying section of the conveyor belt;  An adsorption device is disposed on the base and connected to the loading plate, the adsorption device is configured to connect an external air pressure source, and can adsorb the conveyor belt located above the loading plate;  A defective product removing device is installed in the defective product removing area of the susceptor, and can push the electronic component determined to be defective into the conveyor belt.  

With the novel creation of the aforementioned small-scale electronic component surface inspection mechanism, it is necessary to perform surface inspection of small electronic components at least:  1. Improve work efficiency: The new small electronic component surface inspection mechanism uses a conveyor belt combined with an electrostatic generation device to generate static electricity by friction between the conveyor belt and the loading plate and the download plate of the static electricity generating device, so that it can be light-weight small electronic components. The device is positioned on the conveyor belt by electrostatic adsorption, and the electronic component is quickly transported by the conveyor belt in a linear motion. The surface inspection operation is performed under the photographic lens of the image capturing device to improve the efficiency of the surface inspection operation of the small electronic component.  2, can smoothly carry electronic components to move quickly: As mentioned above, the new small electronic component surface inspection mechanism uses a conveyor belt combined with an electrostatic generation device, enabling it to position small lightweight electronic components with electrostatic adsorption means for transport. The belt rapidly transports the electronic component through the conveyor belt in a linear motion manner, and further combines the adsorption device to adsorb the conveyor belt located above the loading plate, maintains the frictional contact state between the conveyor belt and the loading plate, and enables the movement of the conveyor belt Good stability, reduce the sloshing phenomenon when the conveyor belt is running, and thus can smoothly carry the electronic components to move quickly, and ensure the inspection error of the surface of the electronic components.  3. The electronic component judged to be a defective product can be directly removed in the conveying path: the surface inspection mechanism of the novel small electronic component utilizes a conveyor belt combined with an electrostatic generating device and an adsorption device to smoothly and quickly carry small electronic components to complete image capturing and judgment. After being a good product, in the process of transporting to the discharge area, small electronic components that are judged to be defective products can be directly pushed away from the conveyor belt by the defective product removal device before reaching the discharge area, and only small electronic products of good quality are obtained. The component reaches the discharge area, enabling it to efficiently perform small electronic component surface inspection operations.  

In the novel small electronic component surface inspection mechanism, a plurality of perforations corresponding to the bottom surface of the component conveying section of the conveyor belt may be disposed in the loading plate, the adsorption device includes a plurality of adsorption units, and each adsorption unit includes a joint. a venturi pipe joint and a pipe, the joint being mounted in a perforation of the loading plate, the venturi pipe joint having a main air flow passage forming a change in the size of the aperture and a small aperture connecting the main air flow passage An airflow branch of the section, the main airflow passage being capable of introducing a pressurized airflow outputted by the air pressure source, the airflow branch connecting the joint via the conduit, and passing the pressurized airflow output by the air pressure source When the main airflow passage of the venturi joint is used, the suction of the airflow branch is generated, and the downward suction force is generated on the conveyor belt through the perforation of the conduit, the joint and the loading plate, thereby indirectly absorbing the force and maintaining the conveyor belt. The frictional contact with the loading plate achieves better flatness and stability of the conveyor belt, and effectively reduces the sway during the operation of the conveyor belt.

In the novel small electronic component surface inspection mechanism, the defective product removing device may be a controlled airflow removing device, and the defective product removing device includes at least one airflow nozzle, and each of the airflow nozzles is connected to the air pressure source by a pipe. The high-pressure airflow is controlled to be ejected toward the conveyor belt via the airflow nozzle, so that the electronic component determined to be defective is quickly pushed away from the conveyor belt.

As shown in FIG. 1 to FIG. 3, a preferred embodiment of the novel small electronic component surface inspection mechanism includes a base 10, a conveyor device 20, an image capture device 30, and an electrostatic generation device 40. An adsorption device 50 and a defective product removal device 60.

As shown in FIG. 1 and FIG. 3, the susceptor 10 defines a feeding zone 11, an inspection zone 12, a defective product removal zone 13, and a discharge zone 14 which are sequentially arranged along the lateral direction.

As shown in FIG. 1 , FIG. 2 and FIG. 4 , the conveyor belt device 20 is mounted on the base 10 , and the conveyor belt device 20 includes a conveyor belt 21 and a driving unit 22 , and the conveyor belt 21 is looped. a belt-shaped belt, and the conveyor belt 21 passes through the feeding zone 11, the inspection zone 12, the defective product removal zone 13 and the discharge zone 14 of the base 10, and the driving unit 22 is disposed on the base 10 and connected to the Conveyor belt 21, the drive unit 22 can drive the conveyor belt 21 to operate, and the loop-shaped conveyor belt 21 has a component conveying section 211 positioned above and a return section 212 positioned below, the conveyor belt 21 The component transporting section 211 and the returning section 212 are both lateral and straight sections, and the driven conveyor belt 21 can carry small electronic components from the feeding zone 11 through the inspection zone 12 and the defective product removal zone 13. The small electronic components are then sent out to the discharge zone 14.

In the preferred embodiment, the driving unit 22 includes a driving wheel 221, a driven wheel 222 and a motor 223. The conveyor belt 21 is connected to the driving wheel 221 and the driven wheel 222. The motor 223 is connected to the driving unit. Wheel 221.

As shown in FIG. 1 to FIG. 4 , the image capturing device 30 is mounted on the base 10 and corresponds to the inspection area 12 . The image capturing device 30 includes a photographic lens 31 and at least one illuminating component 32 . The photographic lens 31 and the illuminating unit 32 are mounted on the inspection area 12 of the susceptor 10 and above the component conveying section 211 of the conveyor belt 21, and the image capturing end of the photographic lens 31 faces downward. The conveyor belt 21 can provide illumination to the conveyor belt, and the photographic lens 31 is electrically connected to an external control system or computer to perform an electronic component surface inspection operation. The image capturing device 30 can also be combined with a position adjusting component 33 on the base 10, and the position adjusting component can change the three-dimensional space (X-axis, Y-axis) of the photographic lens 31 and the illuminating component 32. And Z axis) position.

As shown in FIG. 1 to FIG. 4, the image capturing device 30 further includes a detecting component 34. The detecting component 34 is provided with the inspection area 12 of the base 10 and is located on the component conveying section 211 side of the conveyor belt 21. And connecting an external control system or a computer to detect when the conveyor belt 21 carries the electronic component, and sends a signal to the control system or the computer, and then the control system or the computer activates the photographic lens 31 to capture the electrons carried by the conveyor belt 21. Component image. The detecting component 34 can select an infrared detecting component or other non-contact detecting component. In the preferred embodiment, an infrared detecting component is selected.

As shown in FIG. 4 to FIG. 6 , the static electricity generating device 40 is mounted on the base 10 and located in the inner space of the loop-shaped conveyor belt 21 . The static electricity generating device 40 includes an loading plate 41 and a loading device. The downloading plate 42 and the plurality of pressing rollers 43 are disposed in frictional contact with the conveyor belt 21 on the bottom surface of the component conveying section 211 of the conveyor belt 21, and the loading plate 41 is fed from the base 10. The area 11 extends the inspection area 12, the downloading plate 42 is disposed in frictional contact with the conveyor belt on the top surface of the return section 212 of the conveyor belt 21, and the downloading plate 42 extends from the feeding area 11 of the base 10 to inspect In the zone 12, the loading plate 41 and the downloading plate 42 can be in frictional contact with the conveyor belt 21, respectively, to generate an electrostatic action having an adsorption force. The section of the loading plate 41 located in the inspection zone 12 is provided with a plurality of perforations 411, each of which corresponds to the bottom surface of the component conveying section 211 of the conveyor belt 21. The plurality of pressing rollers 43 are disposed on the inspection area 12 of the susceptor 10, and the plurality of pressing rollers 43 are disposed on the two sides of the photographic lens 31 along the longitudinal direction (lateral direction) of the conveyor belt 21. The pressing roller 43 is pressed against the top surface of the component conveying section 211 of the conveyor belt 21 to maintain a frictional contact state between the conveyor belt 21 and the loading plate 41.

As shown in FIGS. 4-6, in the preferred embodiment, it is disclosed that two pressing rollers 43 are used, which can increase the number according to the actual use requirements. The static electricity generating device 40 may further include an outer cover 44 for covering the loading plate 41 and the downloading plate 42 therein.

In the preferred embodiment, the middle portion of the pressing roller 43 and the axial ends form a diameter difference, that is, the diameter of the middle portion of the pressing roller 43 is smaller than the diameter of the axial ends of the pressing roller 43 , that is, the roller 43 is pressed against the roller 43 . The axial ends are pressed against the top surface of the conveyor belt 21, and the middle portion of the pressing roller 43 and the top surface of the conveyor belt 21 have a spacing sufficient to provide passage of small electronic components.

As shown in FIG. 2, FIG. 4 and FIG. 6, the adsorption device 50 is mounted on the base 10 and connected to the through hole 411 of the loading plate 41. The adsorption device 50 is used to connect an external air pressure source. A portion of the conveyor belt 21 located on the loading plate 41 generates a moderate adsorption function to maintain the state in which the conveyor belt 21 is in frictional contact with the loading plate 41 during operation, and the flatness and stability of the conveyor belt 21 are reduced. The sway phenomenon when the conveyor belt 21 is in operation. In the preferred embodiment, the adsorption device 50 is connected to a gas pressure source capable of outputting a pressurized gas flow, and can generate a moderate adsorption force to a partial section of the conveyor belt on the loading plate 41 to maintain the conveyor belt 21 The state in which the loading plate 41 is moved and frictionally contacted, and the conveyor belt 21 is flatly deployed and stably linearly moved.

As shown in FIG. 2, FIG. 4 and FIG. 6, in the preferred embodiment, the adsorption device 50 comprises a plurality of adsorption units, each adsorption unit comprising a joint 51, a venturi joint 52 and a conduit 53, the joint The venturi connector is mounted on the pedestal 41 of the loading plate 41. The venturi connector 52 is mounted on the susceptor 10 and connected to the airflow output end of the air pressure source. The venturi connector 52 has a change in the size of the aperture. a main air flow passage and an air flow branch connecting the smaller diameter section of the main air flow passage, one end of the main air flow passage / is an intake end of the air flow output end connected to the air pressure source, and the other main air flow passage One end is an air outlet end, and the air flow branch is connected to the joint 51 via the duct 53. The venturi pipe joint is a known product, and its specific configuration and air flow actuation principle are prior art, and will not be described herein. In the preferred embodiment, the pressurized airflow outputted by the air pressure source passes through the main airflow passage of the venturi connector 52 to generate an attraction to the airflow branch, and then via the conduit 53, the joint 51, and the loading plate. The perforation 411 of the 41 exerts a downward absorbing force on the conveyor belt 21, thereby indirectly absorbing the force, maintaining the frictional contact state of the conveyor belt 21 with the loading plate 41, and the flatness and stability of the conveyor belt 21, reducing the conveyor belt. 21 shaking phenomenon during operation.

As shown in FIGS. 1 to 5, the defective product removing device 60 is mounted on the defective product removing portion 13 of the susceptor 10, and adjacent to the component conveying portion 211 of the conveying belt 21 for positioning on the conveying belt 21 The small electronic component that is judged to be defective is pushed away from the conveyor belt 21.

In the preferred embodiment, the defective product removing device 60 is an airflow removing device controlled by an external control system or a computer, and is connected to a pneumatic source, so that the defective product removing device 60 can be externally controlled. The control of the system or the computer performs an action of pushing the small electronic component determined to be defective to the conveyor belt 21. In the preferred embodiment, the defective product removing device 60 includes at least one airflow head 61, and each of the airflow nozzles 61 is connected to a pneumatic source by a pipe member for controlling the high-pressure airflow to be discharged toward the conveyor belt 21 via the airflow nozzle 61. .

In the preferred embodiment shown in FIG. 1 to FIG. 5, the defective product removing device 60 may further include at least one defective product collecting container 62 and a mask 63, and the defective product collecting container 62 is disposed on the base. In the defective product removal area 13 of 10, a small electronic component that is determined to be defective is collectively housed, and the mask 63 is attached to the outside of the airflow head 61 and the conveyor belt 21 so as to be pushed away from the conveyor belt 21. The small electronic component 90 does fall into the defective product collection container 62.

With regard to the use case of the surface inspection mechanism for the small electronic component of the present invention applied to small electronic components such as resistors and capacitors, as shown in FIGS. 7 and 8, the small electronic component surface inspection mechanism can be placed in the conveyor belt 21 One end of the material area 11 is connected to a vibrating electronic component array transport mechanism 70, or other electronic component transport mechanism, whereby a plurality of small electronic components 90 are sequentially arranged and then introduced into the conveyor belt 21, and the conveyor belt 21 is located in the discharge zone. One end of the 14 is provided with a good collection container 80 or a good delivery mechanism.

In use, after the plurality of small electronic components 90 arranged in series are sequentially introduced into the conveyor belt 21, the conveyor belt 21 and the combined static electricity generating device 40 enable the small electronic components that are light in weight to be positioned by electrostatic adsorption. The conveyor belt 21 rapidly transports the small electronic components 90 in a linear motion via the conveyor belt 21 from the feeding zone 11 in the direction of the inspection zone 12 in sequence. In this process, the small electronic component surface inspection mechanism generates static electricity by the friction of the loading plate 41 of the static electricity generating device 40, the downloading plate 42 and the conveying belt 21, and the small lightweight electronic component 90 is positioned by electrostatic adsorption. The conveyor belt 21 rapidly transports the electronic component/moving lens photographic lens 31 to the image capturing device 30 via the conveyor belt 21, and the detecting component 34 detects that the small electronic component 90 enters the shooting at the inspection area 12. When the lens 31 is below, the external control system or computer immediately activates the photographic lens 31 to capture the image of the small electronic component 90 carried by the conveyor belt 21, and determines whether the small electronic component 90 is a good one.

In the above, the small electronic component 90 judged to be good is continuously concentrated in the good product collection container 80 through the defective product removal area/to the discharge area 14 under the conveyance of the conveyance belt 21, or is outputted by another good conveyance mechanism. When the small electronic component 90 judged to be defective is carried into the defective product removal area by the conveyance belt 21, the controlled defective product removal device 60 is directly pushed away from the conveyance belt 21 and dropped to the defective product collection container 62. in.

In summary, the novel small electronic component surface inspection mechanism utilizes a conveyor belt in combination with an electrostatic generating device and an adsorption device to enable small-sized small electronic components to perform surface inspection operations under the rapid transport of the conveyor belt in a linear motion mode, and The defective product can be directly removed, so that it can perform the surface inspection work of high-performance small electronic components.

10‧‧‧ Pedestal  11‧‧‧Feeding area

12‧‧‧ inspection area  13‧‧‧Don't remove the area

14‧‧‧Drawing area  20‧‧‧Conveyor belt device  21‧‧‧ conveyor belt

211‧‧‧Component conveying section  212‧‧‧Return section  22‧‧‧ drive unit

221‧‧‧Drive wheel  222‧‧‧ driven wheel

223‧‧ ‧motor  30‧‧‧Image capture device  31‧‧‧Photographic lens

32‧‧‧Lighting components  33‧‧‧ Position adjustment components

34‧‧‧Detection components  40‧‧‧Electrostatic generating device  41‧‧‧ Upload board

411‧‧‧Perforation  42‧‧‧ download board

43‧‧‧Pressure roller  44‧‧‧Outer cover  50‧‧‧Adsorption device

500‧‧‧Adsorption unit  51‧‧‧Connectors

52‧‧‧ wen's pipe joint  53‧‧‧ catheter  60‧‧‧Don't remove the device  61‧‧‧Air jet nozzle

62‧‧‧Drug collection container  63‧‧‧ mask  70‧‧‧Vibrating electronic components  80‧‧‧good collection container  90‧‧‧Small electronic components  

1 is a perspective view of a preferred embodiment of the novel small electronic component surface inspection mechanism.  Fig. 2 is a partially enlarged schematic view showing a preferred embodiment of the surface inspection mechanism for a small electronic component shown in Fig. 1.  3 is a perspective view showing another viewing angle of the preferred embodiment of the small electronic component surface inspection mechanism shown in FIG. 1.  4 is a partially exploded perspective view showing a preferred embodiment of the surface inspection mechanism for a small electronic component shown in FIG. 1.  Figure 5 is a partial perspective cross-sectional view showing a preferred embodiment of the surface inspection mechanism for a small electronic component shown in Figure 1.  Figure 6 is a front plan view showing the preferred embodiment of the small electronic component surface inspection mechanism shown in Figure 4 with a portion removed.  Fig. 7 is a view showing a state of use of a preferred embodiment of the small electronic component surface inspection mechanism shown in Fig. 1 in combination with a vibrating electronic component alignment transport mechanism.  Fig. 8 is a top plan view showing an embodiment of a small electronic component surface inspection mechanism shown in Fig. 1 applied to a surface inspection operation of a small electronic component.  

Claims (9)

A small electronic component surface inspection mechanism includes:  a pedestal defining a feed zone, an inspection zone, a defective removal zone and a discharge zone arranged in sequence along the lateral direction;  a conveyor belt device mounted on the base and capable of carrying a plurality of electronic components moving from the feeding zone toward the discharge zone, the conveyor belt device comprising a loop-shaped conveyor belt and capable of driving the conveyor a drive unit of the belt, the conveyor belt passes through a feeding zone, an inspection zone, a defective product removal zone and a discharge zone of the base, the conveyor belt has a component conveying section located above and a return zone located below a segment, the component conveying section and the return section are both lateral and straight sections;  An image capturing device is disposed in the inspection area of the base, the image capturing device includes a photographic lens and at least one illuminating component, wherein the photographic lens and the illuminating component are located in a component conveying section of the conveyor belt Above the photographic lens facing downwards of the conveyor belt;  An electrostatic generating device is disposed on the base and located in an inner space of the loop-shaped conveyor belt, the static electricity generating device includes an loading plate, a downloading plate and a plurality of pressing rollers, wherein the loading plate is located at the conveying a bottom surface of the component conveying section of the belt, the downloading plate is located at a top surface of the returning section of the conveyor belt, and the loading plate and the downloading plate are in frictional contact with the conveyor belt to generate static electricity for adsorbing electronic components, and the pressing force is Rollers are disposed on the base and are respectively located at two sides of the photographic lens, and the pressing roller is pressed against the top surface of the component conveying section of the conveyor belt;  An adsorption device is disposed on the base and connected to the loading plate, the adsorption device is configured to connect an external air pressure source, and can adsorb the conveyor belt located above the loading plate;  A defective product removing device is installed in the defective product removing area of the susceptor, and can push the electronic component determined to be defective into the conveyor belt.   The small electronic component surface inspection mechanism of claim 1, wherein the loading plate is provided with a plurality of perforations, each perforation corresponding to a bottom surface of the component conveying section of the conveyor belt, the adsorption device comprising a plurality of adsorption units, Each of the adsorption units includes a joint, a venturi joint, and a conduit installed in the perforation of the loading plate, the venturi joint having a main air flow passage forming a change in the size of the aperture and connecting the main An airflow branch of the smaller diameter section of the airflow passage, the one end of the main airflow passage is an intake end, and can be introduced into the pressurized airflow outputted by the air pressure source, and the other end of the main airflow passage is an air outlet. End, the airflow branch connects the joint via the conduit. The small electronic component surface inspection mechanism of claim 2, wherein the defective product removing device is a controlled airflow removing device, the defective product removing device comprising at least one airflow nozzle, each of the airflow nozzles being a tube The air pressure source is coupled to control the injection of high pressure airflow toward the conveyor belt through the airflow nozzle. The small electronic component surface inspection mechanism according to claim 3, wherein the defective product removing device further comprises at least one defective product collecting container and a mask, and the defective product collecting container is disposed on the base. In the area, the electronic component determined to be defective is collectively stored, and the mask cover covers the airflow head and the outside of the conveyor belt. The small electronic component surface inspection mechanism according to any one of claims 1 to 4, wherein the image capturing device further comprises a detecting component, wherein the detecting component is provided with the inspection area of the base and is located at the conveying The component is conveyed to the side of the component and connected to an external control system or computer for detecting that the carrier carries the electronic component, and the camera lens is activated to capture the image of the electronic component carried by the conveyor. The small electronic component surface inspection mechanism of claim 5, wherein the driving unit of the conveyor device comprises a driving wheel, a driven wheel and a motor, the conveyor belt is connected to the driving wheel and the driven wheel, A motor is coupled to the drive wheel. The small electronic component surface inspection mechanism according to claim 5, wherein a diameter of a middle portion of the pressing roller is smaller than a diameter of both ends of the pressing roller, and the axial ends of the pressing roller are pressed against The top surface of the conveyor belt has a spacing between the middle portion of the pressing roller and the top surface of the conveyor belt sufficient to provide passage of the electronic component. The small electronic component surface inspection mechanism according to any one of claims 1 to 4, wherein the image capturing device is combined with a position adjusting component disposed on the base, and the position adjusting component can change the photographic lens. A three degree spatial position with the illumination assembly. The small electronic component surface inspection mechanism of claim 8, wherein the driving unit of the conveyor belt device comprises a driving wheel, a driven wheel and a motor, and the conveyor belt is connected to the driving wheel and the driven wheel. a motor is coupled to the driving wheel, a diameter of a middle portion of the pressing roller is smaller than a diameter of an axial end of the pressing roller, and an axial end of the pressing roller is pressed against a top surface of the conveying belt, and the pressing roller There is a spacing between the middle section and the top surface of the conveyor belt sufficient to provide passage of the electronic components.